The volume occupied by 80 g of oxygen gas is?

m (O2) = 80 g.
Let’s determine the volume of this oxygen. We write down the solution.
We use the following formula. We write down the solution.
n = m / M.
n = V / Vm.
Let us determine the molar mass of oxygen.
M (O2) = 16 * 2 = 32 g / mol.
Vm is the molar volume of the substance, constant equal to 22.4 l / mol.
m / M = V / Vm.
V = m * Vm / M.
V = 80 * 22.4: 32 = 56 liters.
This means that the volume of oxygen weighing 80 grams is 56 liters.
Answer: the volume of oxygen is 56 liters.